Chemistry - Chemical Bonding Flashcards
What’s a compound?
A compound is a substance that is made up of two or more different elements combined together chemically
What is a compound?
Two or more elements combined chemically
What’s an element?
What is an element?
An element is a substance that can’t be split into simpler substances by chemical means
What’s a molecule?
A molecule is a group of atoms joined together. It is the smallest particle of an element or compound that can exist independently
What is a molecule?
A group of atoms joined together.
The smallest part of a element or compound that can exist independently.
Name a molecule that is not a compound
Here’s are a few
Name a molecule that is a compound
Here’s a couple
Categorise this substance.
Element ❑. Molecule ❑. Compound ❑.
Element ✔︎. Molecule ✔︎. Compound ✘.
Categorise this substance.
Element ❑. Molecule ❑. Compound ❑.
Element ✘. Molecule ✔︎. Compound ✔︎.
Why is this molecule not a element?
Because it can be split into two separate elements.
IT’S A COMPOUND
Why is this molecule not a compound?
It has only one kind of element
only one kind of atom
Categorise these substances
What’s a covalent bond?
A bond that consists of shared electrons
What is a single covalent bond?
A single covalent bond is when one pair of electrons is shared
What is a double covalent bond?
A double covalent bond is formed when two pairs of electrons are shared.
Why does H2O act like a magnet?
Most of the electron activity is on the oxygen side, so this side becomes more negative than the hydrogen side
What is a Cation?
What’s an Anion?
A negatively charged ION
Chlorine ION for example
Do you know what an ION is?
What’s happening here?
Table salt is being made. Na+Cl-
Name an ionic compound?
Na+Cl-
Salt
Which of these substances conduct electricity?
How do IONs conduct electricity?
Name two ways electricity can be conducted?
Can this ionic compound conduct electricity?
Not unless the ions are free to move
disolved or molten
